Patrick purifoy andbews



P. P. ANDREWS.-

SCREW DRIVER.-

APPLICATION FILED AUG.2B, 1918.

Patented Dec. 16, 1919.

avwewtoz UN IT STATES PATENT OFFICE.

' rn'rmcx rUnIFoY Amnmws, or BOANOKE, vmemm SCREW-DRIVER.

Application filed August 28,

To all whom it may concern:

Be it known that I, PATRICK P. ANDREWS, a citizen of the United States, rgsiding at Roanoke, in the county of Roanoke and State of Virginia, have invented certain new and useful Improvements in Screw-Drivers, of which the following is a specification.

This invention relates generally to screwdrivers, and has for its primary object to provide a tool of simple and inexpensive construction, capable of being used efiectively in a number of different ways to accomplish a number of different results, and is of small and compact construction so as to enable the same to be conveniently carried upon the person or in a tool kit.

A further object of the invention is to provide a screwdriver and socket wrench, the screwdriver being constructed and arranged in such manner as to permit of the same being used upon screws located in places diflicult of access, and also upon screws so positioned that the degree of rotation of the same at one application of "the screwdriver is limited.

A still further and particular object of the invention is to provide a screwdriver of the character mentioned which is composed of but few simple and readily assembled parts, which is ca able of being readily disjointed or exten ed as conditions require, which may be easily and quickly convertedfrom a screwdriving apparatus into a socket wrench, and which will prove thoroughly practical and efficient in use.

With these objects in view together with others which will appear as the description proceeds, the invention resides in the novel formation, combination and arrangement of parts, all as will be described more fully hereinafter, illustrated in the drawings and particularly pointed out in the claims.

In the drawings Figure 1 is a perspective view of a screw driver constructed in accordance with the invention, and illustrating the same with the parts in the position'they will assume when the device is to be used as a straight screw driver Fig. 2 is an enlarged longitudinal sectional view taken through the screwdriving apparatus extended rearwardly beyond the" hand grip of the same;

Fig. 3 is a longitudinal sectional view taken through the device with the parts in the position they are shown in Fig. 1;

Specification of Letters Patent.

Patented Dec. 16, 1919. 1918. Serial No. 251,790.

' Fig. 4 is a sectional view taken on line -44 of Fig.3; and

' Fig. 5 is an elevation of the screwdriver head with the cap removed therefrom.

Referring now more particularly to the drawing, 6 indicates the shank of a conventional form of screwdriver blade, one end of which is tapered and flattened as at 7 to provide an edge for engagement in the kerf of a screw. The opposite end of this shank 1s provlded with a right-angularly disposed head portion 8 of short length, the ends of which are flattened and tapered as at 9 and 10 to provide kerf-engaging edges. It will be observed that the edges 9 and 10 are disposed at substantially right angles to each other.

The shank 6 in the present instance is hexagonal in cross-section, but may be provided with a more or. less number of sides as desired, or the said shank may be cylindrical throughout its length. This shank extends through a sleeve 11, the latter havangularly disposed walls, whereby a socket I wrench is provided. The opposite end of the sleeve is provided with a head 14 having a channel or pocket 15 of narrow width in its outer end to receive the angularly disposed portion 8 of the screwdriver. The channel or pocket 15 communicates with the opening 12 in the sleeve. The edges of the head 14 are screw-threaded as shown, and engage suitable threads upon a cap or cover 16. This cap is provided with a central aperture 17 for the passage of the stem 6 which is free to turn therein. 7

The sleeve 11 is inclosed by a hand-grip 18. This handle member may be tubular and snugly fits upon the sleeve 11. A screw 19 may be passed through the hand-grip and into the sleeve to hold these parts against relative movement.

With the parts in the positions shown in Figs. 1 and 3, the device is an ordinary screw driver. Should it be desired to use the small head 8 upon the shank 6 for the purpose of operating upon screws in positions not read-' ily accessible, the cap 16 is removed and the I shank 6 is slid so that the head 8 is removed 7 from within the recess 15. The blade or kerf engaging ed es 9 and 10 of the head are then engaged 'wit the screw, and oscillatory movement applied to the shank 6 will cause the screw to berotated. By arranging the blades or edges 9 and 10 at right angles to each other, quarter turns upon the screw may be made. Should it be desired to lengthen the screwdriver, the shank 6 is detached from the sleeve 11 and is assembled upon the same in the manner shown in Fig. 2. The shank 6 thus used extends through the opening 17 in the cap 16. When in this position, the device may also be used as a socket wrench, as the socket 13 in sleeve 11 may be engaged over a nut or bolt head.

From the foregoing it is obvious that I have provided a combination tool of extremely simple and inexpensive construction, and which may be used very eifectively in a number of different ways.

The foregoing description and the drawings have reference to What may be considered the preferred or approved form of my invention. It is to be understood that I may make such changes in construction and arrangement and combination of parts, materials, dimensions, etc., as may prove expedient and fall within the scope of the appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. A screw driver, comprising a sleeve having an axial opening throughout its length, and having an elongated recess in an end thereof intersecting with the axial opening, a shank having a crosshead at one end and insertible in the axial opening of the sleeve and of a length to project beyond the sleeve when the crosshead is in the said recess, and a cap detachably connected to the recessed end of the sleeve to close the recess formed therein and confine the said crosshead in the recess, said cap having a central opening for the passage of the shank to admit of-lengthening the screw driver by reversing. the shank.

2. A screw driver, comprising a sleeve having an axial opening throughout its length of non-circular form in cross section, and having an elongated recess in an end intersecting the axial opening, a shank of cross sectional outline to snugly fit the axial openlength and having a head at one end which i externally screw-threaded and formed in its outer side with an elongated recess intersecting the axial opening, a shank of greater length than the sleeve and insertible in the axial opening thereof and provided at one;

end with a crosshead, the ends of which are flattened to provide screw driver blades disposed relatively at a right angle to each other, the shank being of a cross sectional outline to snugly. fit the axial opening and prevent turning therein and a cap having screw-thread connection with the head of the sleeve and adapted to close the recess in the outer faceof the head and confine the crosshead of the shank therein, said sleeve having a central opening to admit of the passage of the shank. v

In testimony whereof I afiix my signature in presence of two witnesses.

PATRICK PURIFOY ANDREWS. Witnesses:

O. L. PATTERSON, ROY ADKINS. 

